I just yesterday watched RealtimePi make me an image for arm-v7. It went all the motions of building a 4.4.114-rt-v7 kernel out of a arm-hf buster zip containing a 4.19.50-v7 kernel. So knowing the 4.4.114-tr-preempt kernel would be replaced if I ever got the network to work, I added a /etc/apt/preferences.d/kernel.pref to pin the kernel.
But imagine my surprise when I plugged that u-sd into the pi and booted it, one of the first things I note is that the images installed kernel is a 4.19.50-v7, which may be straight from the raspian-buster-zip RealtimePi started with. So, how do I convince CustomPiOS to both build the 4.19.50, with realtime patches applied, and then hand it back to RealtimePi to use building the image? I have done that independently from RealtimePi but no clue how make either of the guysoft utilities to actually use it. Help please, and thank you. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene>